Winding-machine



C. W. HUBBARD. WINDING MACHINE. APPLICATION FILED SEPT-25, 1919.

Patented Oct. 25,

Fig. 2.

Fig. 3.

[w mu Inventor. Charles W. Hubbard Afi'rys.

CHARLES W. HUBBARD, OF WESTON, MASSACHUSETTS.

WINDING-MACHINE.

Application filed September 25, 1919.

To all whom it may concern Be it known that I, CHARLES W. HUBBARD, acitizen of the United States, residing at Weston, county of Middlesex,State of Massachusetts, have invented an Improvement inWinding-Machines, of which the following description, in connection withthe accom-' 'panying drawing, is' a specification, like constructed tobuild up a yarn'mass in said yarn receiver or container in which theyarn is laid in layers Or loops extendingtransversely to the axis oftheyarn receiver, and a yarn support in said yarn container on which theyarn mass is built up, said yarn support having a frictional engagementwith the walls of the yarn container so that as the yarn mass increasesthe yarn support will be forced downwardly in' the yarn con-j tainer,the frictional engagement between the yarn support and containeraffording sufficient resistance to the downward movement of said yarnsupport so that the yarn will be laid compactly.

In the use of the device illustrated. in

Figure 1 of said patent it sometimes happens that the yarn support willmove downwardly in the yarn container as the yarn mass increases with ajerky or hitching motion, this being due to the fact that the frictionalresistance between the yarn support and the yarn container will hold thesupport from movement, and as the winding proceeds, the increasingamount of yarn between the yarn support and the winding head produces anincreased pressure which finally overcomes the frictionalresistance ofthe yarn support against the walls of the container and forces the yarnsupport downwardly. The frictional resistance between two bodies which'are relatively stationary is often greater than that between the samebodies when they are moving relative to each other, and hence as oon asa sufiicient pressure has been developed by the increasing yarn mass toovercome'the static frictional resistance between "the yarn support andthe yarn container and said support moves downwardly, the resistancebetween the moving yarn support and the Well of the container is lessthan that Specification of Letters Patent.

Patented Got. 25, 1921.

Serial No. 326,177.

when the yarn support was stationary and, therefore, the elasticity ofthe compressed yarn mass will cause the yarn support to move aconsiderable distance before it comes to rest. This forward movement ofthe yarn support will reduce the pressure between the same and'thewinding head, and as the winding head proceed to increase the yarn mass,the pressure of the yarn mass against the yarn support will be againincreased to a point suflicient to overcome again the static frictionalresistance between the yarn support and the container.

The compactness with which the yarn is laid at any time depends upon thepressurebetween the winding head and the yarn support, and where theyarn support moves downwardly with an intermittent or stepby-stepmovement, as above described, the yarn mass will be laid more loosely atthose points in the yarn mass where the winding head is operating underreduced pressure and will be laid more compactly at those points wherethe winding head i operating under increased pressure. The result ofthisoperation is that a yarn mass will be produced which is uneven indensity.

The object of my present invention is to provide an improved, form ofyarn support by which the above intermittent or step-bystep movement ofthe yarn support will be entirely eliminated and which will have an evengradual downward movement at all times, thus producing a yarn mass whichhas an even density throughout.

In order to give an understanding of my invention, I have illustrated inthe drawings a selected embodiment thereof which will now be described,after which the novel features will be pointed out in the appendedclaims.

. In he drawings, Fig. 1 is a view partly in section of a windingapparatus embodying my invention;

Fig. 2 is a section on the line 22, Fig. 1; Fig. 3 is a section on theline 33, Fig. 2. In the drawings, 1 indicates the yarn'receiver which isin the form of a cylindrical can'or container and 2 indicates generallya rotary winding head adapted to lay or wind a yarn mass 3 in the yarnreceiver in layers extending transversely to the axis of rotation. Thiswinding head is provided with a winding plate 1 which rests on the yarnmass 3, and is also provided with a vibrating yarn-guiding finger 5 bywhich the yarn is laid, said yarn'passing from the finger 5 through aslot in the winding plate 4.

I have not shown herein any details of the winding head as this may haveany suitable construction adapted to lay the yarn mass 3 in loops orlayers extending transversely to the axis of rotation.

My improved yarn support on which the yarn mass 3 is laid comprises asupporting plate 6 on which the yarn mass 3 rests and a novel frictionaldevice yieldingly connected to the plate and constructed to develop therequired frictional resistance against the walls of the container 1.This frictional device comprises a split friction band 8 which hasfrictional engagement with the walls of the container 1 and isyieldingly held in engagement therewith. This split band 8 is hereinshown as comprising a metallic band 9 to which issecured a'lining 10 ofsuitable friction material. The friction material which is commonly usedfor brake linings of automobiles answers the purpose in a-satisfactorymanner. The metallic'band 9 is provided at its ends with the brackets 11and 12, the bracket 11 having a spring-positioning projection 13extending therefrom and the bracket 12 having an adjusting rod 16screw-threaded there-' through, said rod 16 carrying an adjusting nut14: which forms the backingfor a spring 15,0ne end of which is held inposition by the projection 13 and the other end of which encircles andis held in position by the end of the rod 16. 17 is a check nut carriedby the rod or pin 16 to assist in holding it in adjusted position. Thespring 15 thus acts as an expanding spring which tends to eX- pand thesplit ring 8 into frictional contact with the walls of the container 1,and the construction shown provides means for readily adjusting thetension of the spring and thereby adjusting the frictional engagementbetween theband and the container 1. This split band 8 is carried by asupporting plate 7 which is yieldingly secured to the plate 6.

The metallic ring 9 is provided with inwardly-directed slottedprojections 18 which overlie the plate 7, and the plate 7 is providedwith guiding projections 19 which ex tend through the slots 18 andserveto guide the split band in its expanding or contracting movements.These projections 19 are in the form of screwsor bolts which extendthrough the plate 7 and the slots in the projections 18, said boltsbeing provided with nuts 20. For yieldingly connecting the frictionalmember to the yarn-supporting plate 6, sald plate is shown as providedwith a Tdepending bossorhub 21 and the plate 7 is shown as proyided withan upwardlydirected boss or hub 22 into which is screwedaconnectingscrew 23 that extends loosely through the hub21, and the head24: of which is received in a recess 25 formed in said hub. 26 is aspring which encircles the two hubs and tends to hold the plates 6 and 7sepaplate 7, this projection serving to hold the two plates from turningrelative to each other. i

The operation of this device is as follows: Assuming that the device isoperating with the parts in the position shown in Fig. 1, any increasein the amount of yarn in the yarn mass 3 will increase the downwardpressure against the plate 6-since the plate 4: is incapable of verticalmovement, and such downward pressure will be resisted by the frictionalengagement between the split friction band 8 and the walls of thecontainer 1. Asthe pressure increases, the spring 26 is compressedslightly until the pressure reaches a point sufficient to overcome saidfrictional resistance at which timethe plate 7 with the frictiont'band 8thereon will move downwardly a slight distance, but owing to thepresence of'the spring 26 which maintains the upward pressure on theplate 6, said plate will'not partake of such downward movement of thefrictiondevice, but

will-only move downwardly with a gradual movementdue to the gradualincrease of the size of the yarn mass. The member on which the yarn massis supported, therefore, will have a uniform downward movement as theyarn mass is built up, notwithstanding any variation in downwardmovement which the friction device may have. Thus the yarn mass willbesubjected at all'times to a uniform'pressure which will result inproducing a uniform tension on the yarn as it is drawn in and thereforea yarn massof.

mass, said yarn support comprisinga plate on which the yarn rests, afriction member having frictional engagement with the yarn container,and a yielding connection between said plate andfriction-member.

2. In a device of theclass described, the V combinationwith:a-yarnicontainen'of means to wind-therein a yarn mass which is laidin transverse layers, a frictionmemberhaw ing frictional engagement withthe-wallsfof the yarn container, and a plateon which the yarnvrests andwhich is yieldinglysupported by said friction member. V

3. In a device of the class described, the combination with a yarncontainer, of means to wind the yarn mass therein, and a yarn supportwithin said container and on which the yarn mass is built up, saidsupport having a split friction band yieldingly held in engagement withthe walls of the container.

4. In a device of the class described, the combination with a yarncontainer, of means to wind the yarn mass therein, a friction memberwithin the container, said friction member comprising a split frictionband yieldingly held against the walls of the container, and a plateyieldingly sustained by said friction member and on which the yarn massrests.

5. In a device of the class described, the combination with a yarncontainer, of means to wind the yarn mass therein, a friction memberwithin the container, said friction member comprising a split frictionband yieldingly held against the walls of the container, a plate onwhich the yarn mass is supported, and a spring interposed between saidplate and friction member.

In testimony whereof I have signed my name to this specification.

CHARLES W. HUBBARD.

